[Hallicrafters] Re: 1N4004 voltage rating

[Charlie]

There's a very good chance those 1N4004's are really good for a kV anyway. 
1N4007's are so cheap though, it's not worth it to buy anything else.. 
They're all made at the same time and the ones that test at 1 kV PIV are 
marked 1N4007's.  When they get the desired production quantity of 1N4007's, 
they test at 800 V.  Those are marked 1N4006 etc., down to the 100 PIV 
1N4001's.  If checked, the whole batch might be good at 1000PIV.

73 Charlie k3ICH






----- Original Message ----- 
From: <PROZACH7 at aol.com>
To: <hallicrafters at mailman.qth.net>
Sent: Monday, June 05, 2006 7:24 PM
Subject: [Hallicrafters] Re: 1N4004 voltage rating


> Yeah, I know, but I didn't have any 1N4007's. After 20 hrs of playing
> nothing's blown up; so I guess the 400 volts is conservative - hope so. I 
> would think
> that they would have given up the ghost by now.
> Frank W6LPU
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